Our Hair Roller Serum is expertly formulated with glycerin and tocopherol (vitamin E). Specifically designed to activate dormant hair follicles, promote thicker regrowth, and say goodbye to thinning concerns. Application is remarkably simple: Open the serum bottle, pour it into the roller device, attach the micro-needle head to the bottle, and gently roll the device evenly across the scalp. It delivers gentle rolling care for lasting repair of damaged hair, leaving strands full and resilient. The micro-needles infuse the serum deep into the follicles, nourishing them intensely while strengthening hair strands to prevent breakage.